I thought 1 was good for a pilot, 2 was well-written but the whole sex-alien thing is hard to do in interesting ways, 3 was ok.

My picks from the rest -

5. Small Worlds - One of the best. Wonderfully creepy and weird.

8. They Keep killing Suzie

9. Random Shoes

10. Out of Time - Fabulous. Moving and interesting.

12. Captain Jack Harkness

13. End of Days - Crap, but important *sigh*